400004888 has 32 divisors (see below), whose sum is σ = 785257200. Its totient is φ = 190770048.

The previous prime is 400004881. The next prime is 400004909. The reversal of 400004888 is 888400004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400004881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8870 + ... + 29642.

Almost surely, 2^400004888 is an apocalyptic number.

It is an amenable number.

400004888 is a deficient number, since it is larger than the sum of its proper divisors (385252312).

400004888 is a wasteful number, since it uses less digits than its factorization.

400004888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20891 (or 20887 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 400004888 is about 20000.1221996267. The cubic root of 400004888 is about 736.8093009735.

The spelling of 400004888 in words is "four hundred million, four thousand, eight hundred eighty-eight".